Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 207 · 40 questions

What you do (Bend and split): 1. Fill a clear glass with water and set it on a steady, sunny windowsill. 2. Put white paper on the floor where the sunlight passes through the glass. 3. Move the paper or glass slowly until a rainbow appears. 4. Never look straight at the Sun.

1. 1.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) it floats away (d) the rainbow fades
2. 2.True or false: a balloon is needed for the water rainbow. (a) False (b) True
3. 3.🌈 In VIBGYOR, what number colour is red?
4. 4.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) reflection (c) magnetism (d) refraction
5. 5.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same window (b) brightness of rainbow (c) the same glass (d) the amount of water
7. 7.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
8. 8.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) water splits the light (d) the glass is painted
9. 9.🌈 In VIBGYOR, what number colour is green?
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a mirror (c) bright sunlight (d) a sheet of white paper
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a battery cell (d) bright sunlight
14. 14.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) yeast (c) a clear glass of water (d) a mirror
15. 15.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) blue (d) violet
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🌈 How many colours do we name in a rainbow (VIBGYOR)?
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False
19. 19.🌈 In VIBGYOR, what number colour is indigo?
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the same glass (c) the amount of water
23. 23.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
24. 24.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) True (b) False
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a balloon
27. 27.🌈 In VIBGYOR, what number colour is blue?
28. 28.🌈 In VIBGYOR, what number colour is violet?
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) bright sunlight (d) a sheet of white paper
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
31. 31.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
32. 32.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
33. 33.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
34. 34.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) clouds (d) prisms
35. 35.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a battery cell (d) yeast
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the amount of water (b) the time of day (c) the same window (d) the same glass
37. 37.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it through glass (d) look at it in a mirror
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
40. 40.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a sunny window (c) bright sunlight (d) a clear glass of water

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